diff --git a/website/content/en/releases/15.1R/relnotes.adoc b/website/content/en/releases/15.1R/relnotes.adoc
index 1704808c42..6803193491 100644
--- a/website/content/en/releases/15.1R/relnotes.adoc
+++ b/website/content/en/releases/15.1R/relnotes.adoc
@@ -158,6 +158,34 @@ This section lists the various Security Advisories and Errata Notices since {rel
 | 29 April 2026
 | Heap overflow in libnv
 
+| link:https://www.FreeBSD.org/security/advisories/FreeBSD-SA-26:18.setcred.asc[FreeBSD-SA-26:18.setcred]
+| 20 May 2026
+| Stack buffer overflow via man:setcred[2]
+
+| link:https://www.FreeBSD.org/security/advisories/FreeBSD-SA-26:19.file.asc[FreeBSD-SA-26:19.file]
+| 20 May 2026
+| Kernel use-after-free via file descriptor syscalls
+
+| link:https://www.FreeBSD.org/security/advisories/FreeBSD-SA-26:20.fusefs.asc[FreeBSD-SA-26:20.fusefs]
+| 20 May 2026
+| Heap overflow in FUSE_LISTXATTR
+
+| link:https://www.FreeBSD.org/security/advisories/FreeBSD-SA-26:21.ptrace.asc[FreeBSD-SA-26:21.ptrace]
+| 20 May 2026
+| Missing validation in ptrace(PT_SC_REMOTE)
+
+| link:https://www.FreeBSD.org/security/advisories/FreeBSD-SA-26:22.libcasper.asc[FreeBSD-SA-26:22.libcasper]
+| 20 May 2026
+| man:select[2] file descriptor set overflow causes stack overflow
+
+| link:https://www.FreeBSD.org/security/advisories/FreeBSD-SA-26:23.bsdinstall.asc[FreeBSD-SA-26:23.bsdinstall]
+| 20 May 2026
+| Remote code execution via installer Wi-Fi access point scans
+
+| link:https://www.FreeBSD.org/security/advisories/FreeBSD-SA-26:24.cap_net.asc[FreeBSD-SA-26:24.cap_net]
+| 20 May 2026
+| Incorrect man:libcap_net[3] limitation list manipulation
+
 |===
 
 [[errata]]
@@ -222,6 +250,10 @@ This section lists the various Security Advisories and Errata Notices since {rel
 | 1 May 2026
 | man:dhclient[8] lease validation is too strict
 
+| link:https://www.FreeBSD.org/security/advisories/FreeBSD-EN-26:13.freebsd-update.asc[FreeBSD-EN-26:13.freebsd-update]
+| 20 May 2026
+| man:freebsd-update[8] attempts to merge a generated file
+
 |===
 
 [[userland]]